The demo version of the PAT software developed by IES allows the user great flexibility in researching the opposite sides of the currency exchange markets. At this stage, the software finds financially equivalent payoffs for any European or American payoff, or for more sophisticated payoffs of the portfolios consisting of numerous European or American options. Original payoffs can be entered in one of the three ways: analytically, numerically, or graphically.

• Analytic payoff entry works with formulas – the user can enter any formula that describes the payoff that he is researching. He can work in a 2D or 3D environment, and can assign variables to the functions. Most of the diagrams in this brochure were produced using this method.
• Numerical payoff entry allows the user to enter the original payoff as the portfolio's values at different exchange rate points. This is most useful when the original payoff is too complicated to be described analytically. PAT technology works equally well under these conditions, regardless of the level of complexity of the payoffs. The arbitrarily chosen original payoff was designed using this data entry method.
• Graphical payoff entry enables the user to "draw" the original payoff on the screen by moving around the data points. This method is best used for researching any impact on the domestic payoff caused by a change on the foreign side, before the transaction is actually undertaken. This method is also excellent for learning and gaining intuition on how the foreign-exchange symmetry dynamic works.

Additionally, the software provides the functions of scaling, rotating the three-dimensional images, printing, and exporting images.

The demo software and all of the graphics in this booklet were produced using Matlab. We would like to thank The MathWorks, Inc. for providing us with Matlab – a software package unsurpassed for its ease of use in quickly developing workable software for experimental purposes, and for its extraordinarily powerful graphics capabilities.